1001221202023 has 8 divisors (see below), whose sum is σ = 1149249541280. Its totient is φ = 854442047520.

The previous prime is 1001221202011. The next prime is 1001221202027. The reversal of 1001221202023 is 3202021221001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1001221202023 - 2⁹ = 1001221201511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001221201988 and 1001221202006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001221202027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312294468 + ... + 312297673.

It is an arithmetic number, because the mean of its divisors is an integer number (143656192660).

Almost surely, 2^{1001221202023} is an apocalyptic number.

1001221202023 is a deficient number, since it is larger than the sum of its proper divisors (148028339257).

1001221202023 is an equidigital number, since it uses as much as digits as its factorization.

1001221202023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624592377.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1001221202023 its reverse (3202021221001), we get a palindrome (4203242423024).

The spelling of 1001221202023 in words is "one trillion, one billion, two hundred twenty-one million, two hundred two thousand, twenty-three".